STUDIES ON THE POLLEN MORPHOLOGY OF THE GENUS ULMUS L. IN CHINA AND ITS TAXONOMIC SIGNIFICANCE
STUDIES ON THE POLLEN MORPHOLOGY OF THE GENUS ULMUS L. IN CHINA AND ITS TAXONOMIC SIGNIFICANCE
中国榆属花粉形态研究及其分类意义
STUDIES ON THE POLLEN MORPHOLOGY OF THE GENUS ULMUS L. IN CHINA AND ITS TAXONOMIC SIGNIFICANCE
中国榆属花粉形态研究及其分类意义